A131467 Number of planar polyhexes (A000228) with at most n cells.

1, 2, 5, 12, 34, 116, 449, 1897, 8469, 38959, 182511, 865612, 4140438, 19937335, 96519210, 469387311, 2291623939, 11226534301, 55165698564, 271816734576, 1342610043518

Offset

1,2

Comments

Partial sums of A000228.

Links

Table of n, a(n) for n=1..21.

Crossrefs

Partial sums of A000228.

Sequence in context: A121956 A348102 A176638 * A000103 A101292 A350441

Adjacent sequences: A131464 A131465 A131466 * A131468 A131469 A131470

Keyword

nonn

Author

Tanya Khovanova, Jul 26 2007

Extensions

Offset corrected by John Mason, Jan 10 2023

Status

approved